invariable
adj
never changing; always the same; constant 永不变的; 始终如一的; 恒定的
an invariable pressure, temperature, amount 恒定的压力、 温度、 数量
a noun with an invariable plural 复数形式不变的名词
his invariable courtesy 他那一贯的谦恭有礼.
🎯 考研助记
in(否定)+variable(变化的)- 不变的
🗣️ 情景例句
Because the United States is the most important trade partner.
因为美国是我们最重要的贸易伙伴。
A thousand words will not leave so deep an impression as one deed.